EP 0134258 B1 19861126 - HAMMER FLIGHT TIME CONTROL FOR AN IMPACT PRINTER
Title (en)
HAMMER FLIGHT TIME CONTROL FOR AN IMPACT PRINTER
Publication
Application
Priority
EP 83107603 A 19830802
Abstract (en)
[origin: US4664543A] A device for monitoring and compensating for changes in the flight time of the print hammers of impact printers is disclosed. The flight time of the respectively monitored hammer is calculated from the elapsed time between the moment of firing of a hammer and the moment of impact of the print type carrier against the impact platen. In order to ensure automatic self-adjustment of all print hammers in predetermined test cycles, without the actual printing process itself being affected, and without there being any test imprints on the record carrier, the print type carrier includes, in addition to the standard print types, an additional test type. The impact surface area of the test type is large enough such that no visible imprint is made upon its impact on the record carrier because of the low impact pressure.
IPC 1-7
IPC 8 full level
B41J 1/20 (2006.01); B41J 9/46 (2006.01); B41J 29/46 (2006.01)
CPC (source: EP US)
B41J 9/46 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0134258 A1 19850320; EP 0134258 B1 19861126; DE 3367879 D1 19870115; JP H0417150 B2 19920325; JP S6122966 A 19860131; US 4664543 A 19870512
DOCDB simple family (application)
EP 83107603 A 19830802; DE 3367879 T 19830802; JP 12215384 A 19840615; US 84206486 A 19860318